What to do if Mac Bluetooth is not available
There are a lot of users after upgrading Yosemite, everything is OK. But after a day of rebooting, but found that Bluetooth is not available! Repair Disk permissions, restart, and still cannot start Bluetooth.
Many users who upgraded to OS X Yosemite found that devices working with Mac computers through the Bluetooth protocol had various connectivity issues, including Magic Mouse, Magic Trackpad, Apple wireless keyboards, and a variety of third-party accessories.
Mac Bluetooth does not work with a workaround
Official explanation
At Apple's official support forum, many users said Yosemite caused a variety of Bluetooth-related problems, including Apple's own hardware. Some users indicated that Bluetooth was completely unavailable after upgrading to Yosemite, while others indicated that there was a noticeable delay since the upgrade to Yosemite.
Last month, Apple released iOS 8 for the iphone and ipad devices, and many users said they had a variety of weird Bluetooth problems, especially connecting the iphone to a car bluetooth system.
Of course, many Bluetooth issues have been fixed in iOS 8.1 without knowing when the Bluetooth problem caused by Yosemite will be fixed.
User-Provided Solutions
Bluetooth identification is not coming out. You can restart the computer, see the white screen while holding down the COMMAND+OPTION+P+R, the computer will restart, restart to see if it can be recognized. If this is not recognized, it means that your computer's Bluetooth may be broken, need to send repair.
Because Apple maintenance cost is higher, so in fact you can buy a USB interface Bluetooth, estimated also about 10 dollars, plugged in your computer's USB interface, should also be used. will be cheaper than the maintenance costs, you can consider.